--- old/src/hotspot/share/gc/z/zNMethod.cpp	2019-04-25 11:54:08.437613965 +0200
+++ new/src/hotspot/share/gc/z/zNMethod.cpp	2019-04-25 11:54:07.703589245 +0200
@@ -284,7 +284,7 @@
       // We don't need to take the lock when unlinking nmethods from
       // the Method, because it is only concurrently unlinked by
       // the entry barrier, which acquires the per nmethod lock.
-      nm->unlink_from_method(false /* acquire_lock */);
+      nm->unlink_from_method();
       return;
     }